MANUFACTURING METHOD OF DIARYL CARBONATE FROM DIALKYL CARBONATE CAPABLE OF ABSOLUTELY PREVENTING THE LOSS OF DIARYL CARBONATE AND THE LOSS OF CATALYST

摘要

PURPOSE: A manufacturing method of diaryl carbonate is provided to reduce the contamination of reuse, and to manufacture important products with high purity through a simple method.;CONSTITUTION: A manufacturing method of one or more kinds of diaryl carbonate from one or more kinds of dialkyl carbonate, and one or more kinds of aromatic hydroxyl compounds comprises: a step of generating cyclic alkylene carbonate through recirculation of alkylene glycols, which is obtained at manufacturing reused dialkyl carbonate, under the presence of catalyst by an oxidative carbonylation reaction with monoxide; and a step of switching the cyclic alkylene carbonate to dialkyl carbonate in order.;COPYRIGHT KIPO 2012